Although it doesn't have the weight of support Google can throw behind WebP, BPG produces images of about half the size of WebP’s with the same or better quality (with no artifacts worth noting at less than %20 the file size of JPEG) — while there have been some patent concerns regarding creation of BPG files, there are none with reading them, and by 2020 the patent holders for HEVC/H.265 will have switched entirely to hardware support making BPG completely free and also the fastest decoding image format available for most devices. So the question is — will CDisplayEx be supporting it in CB* files any time soon?